Title :
A 200 GHz lens-coupled annular-slot antenna with 50 GHz tuning range for reconfigurable terahertz detectors
Author :
Zhenguo Jiang ; Rahman, Syed M. ; Shams, Md I. ; Fay, Patrick ; Hesler, J.L. ; Lei Liu
Author_Institution :
Dept. of Electr. Eng., Univ. of Notre Dame, Notre Dame, IN, USA
Abstract :
A frequency-tunable lens-coupled annular-slot antenna using a Schottky varactor diode has been developed and characterized at 140-220 GHz. A tuning range of ~50 GHz (agree with simulation) has been demonstrated by varying the diode´s DC bias. Antenna far-field patterns have been measured at 203 GHz, showing that the diode has only a minor effect on the antenna´s radiation properties. This type of tunable antenna is promising for realizing reconfigurable THz detectors and focal-plane arrays.
Keywords :
Schottky diodes; antenna radiation patterns; focal planes; lens antennas; loop antennas; millimetre wave antennas; slot antennas; tuning; varactors; Schottky varactor diode; antenna far-field patterns; antenna radiation properties; diodes DC bias; focal-plane arrays; frequency 140 GHz to 220 GHz; frequency 50 GHz; frequency-tunable lens-coupled annular-slot antenna; reconfigurable terahertz detectors; tuning range; Antennas; Capacitors; Gold; Imaging; Radio access networks; Silicon; Substrates; Schottky diodes; antenna radiation patterns; tunable circuits and devices; tuning; varactors;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848460
